I155 over Overflow
Dyer County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I155 over Overflow in Dyer County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1977, making it 48 years old at the 2025 inventory.
- It carries about 11,456 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 144 of the 232 inventoried bridges in Dyer County rated fair (62.1%); 19 (8.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (36.07841, -89.51839)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 441 ft |
| Location | 1.2 M W Jct I155&SR182 |
| NBI structure number | 23I01550010 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Dyer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 3 over Branch | 1979 | 14,573 | Fair |
| Fap 3 over Light Creek | 1979 | 14,573 | Fair |
| I155 over Lewis Creek | 1979 | 14,405 | Fair |
| I155 over Drainage Ditch | 1979 | 14,405 | Good |
| I155 over Drainage Ditch | 1979 | 14,405 | Good |
| Fap 3 over SR 3 / I155 | 1979 | 14,291 | Fair |
All bridges nearby: Dyer County, TN bridge conditions · every bridge in Dyer County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.